12213112 has 8 divisors (see below), whose sum is σ = 22899600. Its totient is φ = 6106552.

The previous prime is 12213109. The next prime is 12213127. The reversal of 12213112 is 21131221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 12213092 and 12213101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 763312 + ... + 763327.

It is an arithmetic number, because the mean of its divisors is an integer number (2862450).

Almost surely, 2^12213112 is an apocalyptic number.

It is an amenable number.

12213112 is a deficient number, since it is larger than the sum of its proper divisors (10686488).

12213112 is a wasteful number, since it uses less digits than its factorization.

12213112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526645 (or 1526641 counting only the distinct ones).

The product of its digits is 24, while the sum is 13.

The square root of 12213112 is about 3494.7263126030. The cubic root of 12213112 is about 230.2901945097.

Adding to 12213112 its reverse (21131221), we get a palindrome (33344333).

The spelling of 12213112 in words is "twelve million, two hundred thirteen thousand, one hundred twelve".